Soil pH determines bacterial distribution and assembly processes in natural mountain forests of eastern China
Soil pH determines bacterial distribution and assembly processes in natural mountain forests of eastern China
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土壤pH值决定中国东部天然山林细菌分布和组装过程
DOI：
10.1111/geb.13373
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发表时间：
2021-08
影响因子：
6.4
通讯作者：
Chu Haiyan
中科院分区：
文献类型：
--
作者：
Ni Yingying;Yang Teng;Ma Yuying;Zhang Kaoping;Soltis Pamela S.;Soltis Douglas E.;Gilbert Jack A.;Zhao Yunpeng;Fu Chengxin;Chu Haiyan
森林土壤微生物群落学的研究已有很多，但在大的空间尺度上，土壤因素、植物、气候因素和地理距离对细菌群落和组装过程的影响还不清楚。在这里，我们分析了影响土壤细菌群落在58个树种在5个天然山地forest. LocationEasternChina.Major类群studiedBacteriescommunity.MethodsHierarchical分区分析和距离衰减模型的细菌群落组成的植物演替，环境和空间变量的相对贡献进行评估。我们应用最近的分类单元指数（NTI），β-最近的分类单元指数（βNTI），和修改后的Raup-Crick度量，以揭示细菌组装processes.ResultsWe发现的机制，植物共生占一个显着的，但较小的，分数（0.7%）的细菌群落组成的变化。相比之下，土壤pH值是细菌多样性和群落组成的主要决定因素，分别独立解释了68.6%和69.9%的变异。NTI分析表明，随着土壤pH值的增加，细菌群落的聚集性逐渐增大。当土壤pH值差异≥ 0.83时，细菌群落聚集性主要由变量选择作用决定，而当土壤pH值差异<0.83时，细菌群落聚集性主要由分散作用决定。主要结论我们的研究结果提供了强有力的证据表明，土壤pH值主要决定细菌的分布和介导的随机性和决定性的相对影响，在土壤细菌群落组装。这表明，气候变化相关的森林土壤酸化可能对土壤细菌多样性、组成和功能产生巨大影响。
AimThere have been numerous studies of forest‐soil microbial biogeography, but an integrated view of edaphic factors, plant, climatic factors, and geographic distance in determining the variation of bacterial community and assembly processes remains unclear at large spatial scales. Here, we analysed the factors affecting the biogeographic pattern and assembly processes of soil bacterial communities under 58 tree species in five natural mountain forests.LocationEastern China.Major taxa studiedBacterial communities.MethodsHierarchical partitioning analysis and distance decay models were performed to evaluate the relative contributions of plant phylogeny, environmental, and spatial variables to the composition of bacterial communities. We applied the nearest taxon index (NTI), β‐nearest taxon index (βNTI), and the modified Raup–Crick metric to reveal the mechanisms of bacterial assembly processes.ResultsWe found that plant phylogeny accounted for a significant, but minor, fraction (0.7%) of the variation in composition of bacterial communities. In contrast, soil pH was the primary determinant of bacterial diversity and community composition, independently explaining 68.6 and 69.9% of the variation, respectively. Based on the NTI analysis, bacterial community assembly was more phylogenetically clustered with increasing soil pH. Variable selection was the predominant process explaining bacterial community assembly when differences in soil pH were ≥ 0.83, whereas homogenizing dispersal dominated when differences in soil pH were <0.83. However, there was no significant relationship between plant phylogenetic distance and βNTI.Main conclusionsOur findings provide strong evidence that soil pH predominantly determines bacterial distribution and mediates the relative impact of stochasticity and determinism in soil bacterial community assembly. This suggests that climate‐change associated forest soil acidification could have a dramatic impact on soil bacterial diversity, composition, and function.
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中国北方森林火灾后土壤细菌群落的快速恢复
影响因子：
4.6
作者：
Xiang X;Shi Y;Yang J;Kong J;Lin X;Zhang H;Zeng J;Chu H
通讯作者：
Chu H
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
Campbell O. Webb;D. Ackerly;S. Kembel
通讯作者：
Campbell O. Webb;D. Ackerly;S. Kembel
空间尺度影响华北平原麦田土壤细菌群落随机性与决定性的相对作用
影响因子：
15.5
作者：
Shi Y;Li Y;Xiang X;Sun R;Yang T;He D;Zhang K;Ni Y;Zhu YG;Adams JM;Chu H
通讯作者：
Chu H
影响因子：
6.4
作者：
Ma B;Dai Z;Wang H;Dsouza M;Liu X;He Y;Wu J;Rodrigues JL;Gilbert JA;Brookes PC;Xu J
通讯作者：
Xu J
影响因子：
3.7
作者：
Nacke H;Thürmer A;Wollherr A;Will C;Hodac L;Herold N;Schöning I;Schrumpf M;Daniel R
通讯作者：
Daniel R